DE10052679A1 - Endoscope has control section and shaft with frame, and pipe containing slits - Google Patents

Endoscope has control section and shaft with frame, and pipe containing slits

Info

Publication number
DE10052679A1
DE10052679A1 DE10052679A DE10052679A DE10052679A1 DE 10052679 A1 DE10052679 A1 DE 10052679A1 DE 10052679 A DE10052679 A DE 10052679A DE 10052679 A DE10052679 A DE 10052679A DE 10052679 A1 DE10052679 A1 DE 10052679A1
Authority
DE
Germany
Prior art keywords
slots
tube
pattern
different
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE10052679A
Other languages
German (de)
Inventor
Gregory S Konstorum
Edward A Grabover
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gyrus ACMI Inc
Original Assignee
Circon Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Circon Corp filed Critical Circon Corp
Publication of DE10052679A1 publication Critical patent/DE10052679A1/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064Constructional details of the endoscope body
    • A61B1/00071Insertion part of the endoscope body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005Flexible endoscopes
    • A61B1/0051Flexible endoscopes with controlled bending of insertion part
    • A61B1/0055Constructional details of insertion parts, e.g. vertebral elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2476Non-optical details, e.g. housings, mountings, supports
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005Flexible endoscopes
    • A61B1/0051Flexible endoscopes with controlled bending of insertion part

Abstract

The endoscope has a control section from which a shaft extends. The shaft has a frame with a one-piece pipe (40) along the main part of the shaft's length. The pipe consists of a super-elastic alloy and has slits (46) at least over a section (52,54,56,59). The shaft has pre-set buckling resistance, flexibility and torsional strength.

Description

Die Erfindung betrifft medizinische Instrumente, spezieller Endoskope.The invention relates to medical instruments, more particularly Endoscopes.

UK-A-2 130 885 offenbart einen flexiblen distalen Endab­ schnitt eines Endoskops. Dieser Endabschnitt besteht aus Kunststoff mit Wirbeln, die durch ein langgestrecktes Ele­ ment oder ein Rückgrat verbunden sind. US-A-5,938,588 offen­ bart ein Endoskop mit Drahtumhüllungen in Form durchgehender Rohre aus einer superelastischen Legierung.UK-A-2 130 885 discloses a flexible distal endab cut an endoscope. This end section consists of Plastic with vertebrae, which are characterized by an elongated ele ment or a backbone are connected. US-A-5,938,588 bears an endoscope with wire wraps in the form of continuous Super elastic alloy tubes.

Der Erfindung liegt die Aufgabe zu Grunde, ein Endoskop mit verbesserter Flexibilität zu schaffen. The invention is based on the object of having an endoscope to create improved flexibility.  

Diese Aufgabe ist hinsichtlich des Endoskops durch die Leh­ ren der beigefügten unabhängigen Ansprüche 1, 15 und 20 so­ wie hinsichtlich des Verfahrens durch die Lehren der beige­ fügten unabhängigen Ansprüche 25 und 32 gelöst.This task is regarding the endoscope by the Leh ren of the appended independent claims 1, 15 and 20 so as for the procedure through the teachings of beige added independent claims 25 and 32 solved.

Weitere Gesichtspunkte und Merkmale der Erfindung werden in der folgenden Beschreibung unter Bezugnahme auf die beige­ fügten Zeichnungen erläutert.Further aspects and features of the invention are described in the following description with reference to the beige added drawings explained.

Fig. 1 ist eine Seitenansicht eines Endoskops gemäß einer Ausführungsform der Erfindung; Fig. 1 is a side view of an endoscope according to an embodiment of the invention;

Fig. 2 ist eine Schnittansicht des Schafts des in Fig. 1 dargestellten Endoskops; Fig. 2 is a sectional view of the shaft of the endoscope shown in Fig. 1;

Fig. 3 ist eine Seitenansicht des Rohrs, das für den Rahmen des in Fig. 2 dargestellten Schafts verwendet ist; Fig. 3 is a side view of the tube used for the frame of the shaft shown in Fig. 2;

Fig. 4A ist eine Schnittansicht des in Fig. 3 dargestellten Rohres entlang der dortigen Linie 4A-4A; Fig. 4A is a sectional view of the tube shown in Fig. 3 along the line 4 A- 4 A there;

Fig. 4B ist eine Schnittansicht des in Fig. 3 dargestellten Rohrs entlang der dortigen Linie 4B-4B; FIG. 4B is a sectional view of the tube shown in Figure 3 along the line 4 4 B B.

Fig. 4C ist eine vergrößerte Ansicht eines Teils des ersten Abschnitts des in Fig. 3 dargestellten Rohrs; Fig. 4C is an enlarged view of a portion of the first section of the tube shown in Fig. 3;

Fig. 5 ist eine Teilseitenansicht des in Fig. 3 dargestell­ ten Rohrs in gebogenem Zustand; Fig. 5 is a partial side view of the tube shown in Fig. 3 in the bent state;

Fig. 6A bis 6D sind Schnittansichten des dritten Abschnitts des in Fig. 3 dargestellten Rohrs, wobei vier verschiedene Schlitzrichtungen im Rohr dargestellt sind; Figs. 6A to 6D are sectional views of the third section of the tube shown in Figure 3 with four different slit directions are shown in the pipe.

Fig. 7A bis 7E sind Schnittansichten eines Rohrs gemäß einem alternativen Ausführungsbeispiel der Erfindung und FIGS. 7A to 7E are sectional views of a tube according to an alternative embodiment of the invention, and

Fig. 8 ist eine Schnittansicht eines alternativen Ausfüh­ rungsbeispiels eines Schafts. Fig. 8 is a sectional view of an alternative embodiment of an exporting approximately stem.

Nun wird die Erfindung unter Bezugnahme auf die in den Zeichnungen dargestellten Ausführungsbeispiele näher ge­ schrieben, jedoch ist zu beachten, dass die Erfindung auf viele alternative Weisen realisiert werden kann. Dabei kön­ nen jeweils geeignete Größen, Formen oder Arten von Elemen­ ten oder Materialien verwendet werden.Now the invention with reference to the in the Drawings shown embodiments closer ge wrote, however, it should be noted that the invention many alternative ways can be realized. You can suitable sizes, shapes or types of elements materials or materials are used.

Das in Seitenansicht in Fig. 1 dargestellte Endoskop 10 ver­ fügt im Wesentlichen über einen Griff oder einen Steuerungs­ teil 12 und einen flexiblen oder halbflexiblen Schaft 14, der mit dem Griff 12 verbunden ist. Der Schaft 14 verfügt über einen passiven Auslenkabschnitt 16 und einen aktiven Auslenkabschnitt 18 an seinem distalen Ende. Ausgehend vom Griff 12 erstreckt sich ein Steuerungssystem 22 zum Steuern des aktiven Auslenkabschnitts 18 zu diesem. Wie es auch aus Fig. 2 erkennbar ist, verfügt das Steuerungssystem 22 im We­ sentlichen über ein Paar Steuerungsdrähte 24a, 24b, zwei Drahthüllen 50a, 50b und ein Betätigungselement 28. Die Drähte 24a, 24b sind an einem Ende mit dem Betätigungsele­ ment 28 und am anderen Ende mit dem aktiven Auslenkabschnitt 18 verbunden.The endoscope 10 shown in side view in FIG. 1 essentially has a handle or a control part 12 and a flexible or semi-flexible shaft 14 which is connected to the handle 12 . The shaft 14 has a passive deflection section 16 and an active deflection section 18 at its distal end. Starting from the handle 12 , a control system 22 for controlling the active deflection section 18 extends to it. As can also be seen from FIG. 2, the control system 22 essentially has a pair of control wires 24 a, 24 b, two wire sheaths 50 a, 50 b and an actuating element 28 . The wires 24 a, 24 b are connected at one end to the actuating element 28 and at the other end to the active deflection section 18 .

Beim bevorzugten Ausführungsbeispiel verfügt der Griff 12 über einen vom Benutzer bedienbaren Schlitten oder Hebel 30. Der Hebel 30 ist mit dem Betätigungselement 28 verbunden. Das Betätigungselement 28 ist so ausgebildet, dass es an den zwei Drähten 24a, 24b des Steuerungssystems 22 zieht oder diesen nachgibt. Wenn der Hebel 30 vom Benutzer bedient wird, wird das Betätigungselement 28 verstellt. Das Betäti­ gungselement 28 kann eine drehbar mit dem Griff 12 verbundene Trommel oder Scheibe sein, um an einem Draht 24a, 24b zu ziehen, während der andere gelockert wird. Bei einem alter­ nativen Ausführungsbeispiel kann das Betätigungselement eine beliebige geeignete Einrichtung sein, wie ein Kipphebelarm, der so ausgebildet ist, dass er die Drähte des Steuerungs­ systems 22 anzieht oder lockert. Bei einem anderen alterna­ tiven Ausführungsbeispiel, bei dem das Steuerungssystem zwei oder mehr Paare von Steuerungsdrähten aufweisen kann, ver­ fügt der Griff über zusätzliche Betätigungselemente und ent­ sprechende Steuerungsteile zum Betreiben der zusätzlichen Paare von Steuerungsdrähten. Bei noch anderen alternativen Ausführungsbeispielen kann der Griff über Knöpfe mit Zahn­ stangenmechanismen oder über andere geeignete, vom Benutzer bedienbare Steuerungsteile für das Steuerungssystem verfü­ gen.In the preferred embodiment, the handle 12 has a slide or lever 30 that can be operated by the user. The lever 30 is connected to the actuating element 28 . The actuating element 28 is designed such that it pulls or yields to the two wires 24 a, 24 b of the control system 22 . When the lever 30 is operated by the user, the actuating element 28 is adjusted. The Actuate supply element 28 may be a drum or disc rotatably connected to the handle 12 to pull on a wire 24 a, 24 b while the other is loosened. In an older native embodiment, the actuator may be any suitable device, such as a rocker arm that is configured to attract or loosen the wires of the control system 22 . In another alternative embodiment, in which the control system can have two or more pairs of control wires, the handle has additional actuating elements and corresponding control parts for operating the additional pairs of control wires. In still other alternative embodiments, the handle may have knobs with rack mechanisms or other suitable user-operable control parts for the control system.

Der Schaft 14 ist einseitig am Griff 12 eingespannt. Beim bevorzugten Ausführungsbeispiel verfügt der flexible Schaft 14 über einen Durchmesser von ungefähr 8 Fr (1 Fr = 1 Charrière = 1/3 mm). Bei alternativen Ausführungsbeispielen kann der flexible Schaft jeden geeigneten Durchmesser auf­ weisen. Der flexible Schaft 14 enthält die Steuerungsdrähte 24a, 24b des Steuerungssystems 22, ein faseroptisches Bild­ erzeugungsbündel 37, ein faseroptisches Beleuchtungsbündel 36 und einen Arbeitskanal 38. Am Griff 12 befindet sich eine Öffnung 60 zum Einführen von Instrumenten (nicht darge­ stellt) in den Kanal 38. Der Griff 12 verfügt auch über ei­ nen Lichtquellenhalter 62 zum Verbinden einer Lichtquelle (nicht dargestellt) mit dem Beleuchtungsbündel 36. Außerdem verfügt der Griffel 12 über ein Okular 63, mit dem ein Be­ nutzer das durch das Bilderzeugungsbündel 37 vom Vorderende 20 übertragene Bild betrachten kann. Bei alternativen Aus­ führungsbeispielen kann der flexible Schaft verschiedene Systeme enthalten. Der Schaft 14 verfügt im Wesentlichen über einen Rahmen 26, einen Mantel 32 und einen Objektivkopf 34. Es wird auch auf Fig. 3 Bezug genommen, gemäß der der Rahmen 26 im Wesentlichen über ein einstückiges Rohr 40 ver­ fügt. Jedoch kann der Rahmen bei alternativen Ausführungs­ beispielen aus mehr als einem Rohr bestehen, wie aus mehre­ ren hintereinander angeordneten Rohren, und er kann zusätz­ liche Elemente aufweisen. Das Rohr 40 besteht vorzugsweise aus einer Legierung mit Formgedächtnis wie Tinel oder Niti­ nol. Dieses Material mit Formgedächtnis wird wegen seiner superelastischen Eigenschaften verwendet, die sich in der Fähigkeit des Materials zeigen, selbst dann ausgelenkt zu werden und elastisch in seine natürliche oder vorbestimmte Stellung zurückzukehren, wenn die Materialspannungen unge­ fähr 4% erreichen, d. h. eine Größenordnung mehr als die ty­ pische Streckgrenze von 0,4%, die in üblichen Metallen zu plastischer Verformung führt. So wird der Begriff "super­ elastische Legierung" zum Bezeichnen dieses Materialtyps verwendet. Die Drahthüllen 50a, 50b können ebenfalls aus diesem Materialtyp bestehen, wie es in US-A-5,938,588 offen­ bart ist.The shaft 14 is clamped on one side on the handle 12 . In the preferred embodiment, the flexible shaft 14 has a diameter of approximately 8 Fr (1 Fr = 1 Charrière = 1/3 mm). In alternative embodiments, the flexible shaft can have any suitable diameter. The flexible shaft 14 contains the control wires 24 a, 24 b of the control system 22 , a fiber optic image generation bundle 37, a fiber optic illumination bundle 36 and a working channel 38 . There is an opening 60 on the handle 12 for introducing instruments (not shown) into the channel 38 . The handle 12 also has a light source holder 62 for connecting a light source (not shown) to the lighting beam 36 . In addition, the stylus 12 has an eyepiece 63 with which a user can view the image transmitted through the imaging bundle 37 from the front end 20 . In alternative exemplary embodiments, the flexible shaft can contain different systems. The shaft 14 essentially has a frame 26 , a jacket 32 and a lens head 34 . Reference is also made to FIG. 3, according to which the frame 26 essentially has a one-piece tube 40 . However, in alternative embodiments, the frame may consist of more than one tube, such as several tubes arranged in series, and it may have additional elements. The tube 40 is preferably made of a shape memory alloy such as Tinel or Niti nol. This shape memory material is used for its super elastic properties, which are demonstrated in the ability of the material to deflect and return elastically to its natural or predetermined position when the material stresses reach approximately 4%, an order of magnitude more than that typical yield strength of 0.4%, which leads to plastic deformation in common metals. So the term "super elastic alloy" is used to designate this type of material. The wire sheaths 50 a, 50 b can also consist of this type of material, as is open beard in US-A-5,938,588.

Das Rohr 40 verfügt über einen mittleren Kanal 42 mit je­ weils offenem Vorder- und Hinterende 44, 45 und mit Schlit­ zen 46 entlang zumindest eines Teils seiner Länge. Bei die­ sem Ausführungsbeispiel weisen die Schlitze entlang ver­ schiedenen Abschnitten oder Stücken des Rohrs verschiedene Muster auf. Genauer gesagt, sind die Schlitze 46 bei diesem Ausführungsbeispiel in drei Abschnitten 52, 54, 56 konfigu­ riert. Jeder Abschnitt weist ein anderes Muster der Schlitze 46 auf. Das mindestens eine Muster der Schlitze 46 können auf Grundlage z. B. der folgenden Variablen konfiguriert sein:
The tube 40 has a central channel 42 , each with open front and rear ends 44 , 45 and with slits 46 along at least part of its length. In this embodiment, the slits have different patterns along different sections or pieces of the tube. More specifically, the slots 46 are configured in three sections 52 , 54 , 56 in this embodiment. Each section has a different pattern of slots 46 . The at least one pattern of the slots 46 may be based on e.g. For example, the following variables can be configured:

  • - Abstand zwischen benachbarten Schlitzen;- distance between adjacent slots;
  • - Richtung(en) der Schlitze in das Rohr 40 hinein;- Direction (s) of the slots into the tube 40 ;
  • - Tiefe der Schlitze in das Rohr hinein;- depth of the slots in the tube;
  • - Breite der Schlitze; - width of the slots;  
  • - Form der Schlitze und- shape of the slots and
  • - Mischen verschiedener Richtungen der Schlitze entlang ei­ nem Stück des Rohrs.- Mixing different directions along the slots a piece of the pipe.

Bei alternativen Ausführungsbeispielen kann das Rohr 40 mehr oder weniger als drei Abschnitte mit verschiedenen Schlitz­ mustern, wie nur einen oder zwei Abschnitte, aufweisen.In alternative embodiments, tube 40 may have more or less than three sections with different slot patterns, such as only one or two sections.

Außerdem könnte das Rohr mit allmählichen oder gemischten Schlitzübergangszonen zwischen Abschnitten versehen sein, anstatt dass abrupte Übergänge zwischen Abschnitten mit ver­ schiedenen Schlitzmustern vorhanden sind. Bei diesem Ausfüh­ rungsbeispiel verfügt das Rohr 40 auch über zwei Abschnitte 58, 59 ohne Schlitze.In addition, the tube could be provided with gradual or mixed slot transition zones between sections, instead of abrupt transitions between sections with different slot patterns. In this exemplary embodiment, the pipe 40 also has two sections 58 , 59 without slots.

Nun wird auch auf die Fig. 4A und 4B Bezug genommen, gemäß denen der erste Abschnitt 52 der Schlitze 46 entlang dem ak­ tiven Auslenkabschnitt 18 des Schafts vorhanden ist. Bei diesem Ausführungsbeispiel ist der aktive Auslenkabschnitt 18 in zwei Richtungen auslenkbar, wie es durch die gestri­ chelten Linien in Fig. 1 dargestellt ist. Bei alternativen Ausführungsbeispielen könnte der aktiven Auslenkabschnitt 18 nur in einer Richtung oder in mehr als zwei Richtungen aus­ lenkbar sein. Beim aktiven Auslenkabschnitt 18 für zwei Richtungen ist der Rahmen mit zwei Schlitzrichtungen A und B in die Seite des Rohrs 40 hinein versehen, die um 180° ge­ geneinander versetzt sind. Es wird auch auf Fig. 4C Bezug genommen, gemäß der die Schlitze 46 eine Tiefe Y in das Rohr 40 hinein aufweisen, jedoch in entgegengesetzten Richtungen für die zwei Arten von Schlitzen 46a, 46b relativ zur Mit­ telachse 64 des Rohrs 40. Die Schlitze verfügen über einen Mittellinienabstand X zwischen benachbarten Schlitzen 46a, 46b; außerdem weisen sie eine Breite W auf. Bei diesem Aus­ führungsbeispiel sind die Werte von W, X und Y entlang dem Stück des ersten Abschnitts 52 gleich. Jedoch könnten sie bei alternativen Ausführungsbeispielen variieren. Es wird auch auf Fig. 5 Bezug genommen, in der ein Teil des ersten Abschnitts 52 in gebogener Stellung dargestellt ist. Die Schlitze 46 versehen das Rohr 40 mit erhöhter Flexibilität entlang der Länge des ersten Abschnitts 52. Außerdem begren­ zen die zwei Richtungen A, B der Schlitze 46 im ersten Ab­ schnitt 52 diese erhöhte Flexibilität auf zwei entgegenge­ setzte Richtungen. Der erste Abschnitt könnte für begrenzte erhöhte Flexibilität in nur einer Richtung Schlitze nur in einer Richtung aufweisen, oder er könnte für erhöhte Flexi­ bilität in vier Richtungen oder allen Richtungen Schlitze in vier oder mehr Richtungen aufweisen.Now, 4A and 4B, reference is also made to Fig. Pursuant to which the first section of the slots 46 along the ak tive deflection section 18 of the shaft is present 52nd In this embodiment, the active deflection section 18 can be deflected in two directions, as shown by the dashed lines in FIG. 1. In alternative exemplary embodiments, the active deflection section 18 could only be deflectable in one direction or in more than two directions. When active deflection section 18 for two directions, the frame is provided with two slot directions A and B into the side of the tube 40 , which are offset by 180 ° ge against each other. Reference is also made to Fig. 4C, a depth Y have accordance with the slots 46 in the tube 40 into it, but in opposite directions for the two types of slits 46 a, 46 b relative to the with center axis 64 of tube 40. The slots have a center line spacing X between adjacent slots 46 a, 46 b; they also have a width W. In this embodiment, the values of W, X and Y along the piece of the first section 52 are the same. However, they could vary in alternative embodiments. Reference is also made to FIG. 5, in which a part of the first section 52 is shown in the bent position. The slots 46 provide the tube 40 with increased flexibility along the length of the first section 52 . In addition, the two directions A, B of the slots 46 in the first section 52 limit this increased flexibility to two opposite directions. The first section could have one-way slots for limited one-way flexibility, or it could have four-way or four-way slots for increased flexibility or all directions.

Gemäß den Fig. 3 sowie 6A bis 6D ist der zweite Abschnitt 54 entlang dem passiven Auslenkabschnitt 16 vorhanden (siehe Fig. 1). Jedoch muss der passive Auslenkabschnitt 16 über seine Länge des Rahmens keine Schlitze 46 aufweisen. Bei diesem Ausführungsbeispiel ist das Rohr 40 mit Schlitzen 46a, 46b, 46c und 46d in das Rohr 40 hinein in vier Richtun­ gen A, B, C und D versehen, die um 90° gegeneinander ver­ setzt sind. Die Schlitze 46a, 46b, 46c, 46d sind mit sich wiederholendem Muster der Reihe nach angeordnet, jedoch könnte jede geeignete Mischung der Muster der Schlitze 46a, 46b, 46c, 46d vorhanden sein. Bei diesem Ausführungsbeispiel ist der Abstand X' zwischen benachbarten Schlitzen 45 im zweiten Abschnitt 54 größer als der Abstand X zwischen be­ nachbarten Schlitzen 46 im ersten Abstand 52. Jedoch könnte für X' jeder geeignete Abstand, oder beliebige geeignete Ab­ stände, gelten, einschließlich verschiedener Abstände von X' entlang der Länge des zweiten Abschnitts 54. Auch ist bei diesem Ausführungsbeispiel die Tiefe Y' der Schlitze 46a, 46b, 46c und 46d im zweiten Abschnitt 54 kleiner als die Tiefe Y im ersten Abschnitt 52. Bei diesem Ausführungsbei­ spiel beträgt die Tiefe Y' ungefähr 1/2 des Durchmessers des Rohrs 40, und die Tiefe Y entspricht ungefähr 2/3 des Durchmessers des Rohrs 40. Jedoch können Y und Y' jede geeignete Tiefe aufweisen. Außerdem kann Y' in verschiedenen der Schlitze 46a, 46b, 46c, 46d entlang der Länge des zweiten Abschnitts 54 verschieden sein, wie zum Vorderende des Rohrs hin tiefer. Die Breite der Schlitze 46a, 46b, 46c und 46d entlang dem zweiten Abschnitt 54 könnte dieselbe wie die Breite W im ersten Abschnitt 54 sein, sie könnte aber auch verschieden von dieser Breite W sein und/oder sie könnte entlang der Länge des zweiten Abschnitts 54 variieren oder unterschiedlich sein, wie zum Vorderende des Rohrs hin brei­ ter. Der zweite Abschnitt 54 verfügt vorzugsweise über grö­ ßere Knickfestigkeit, größere Steifigkeit (oder geringere Flexibilität) und größere Drehmomentstabilität als der erste Abschnitt 52, was für passive Auslenkung eher als für aktive Auslenkung geeignet ist. Durch Anbringen der Schlitze weiter entfernt voneinander und mit kleinerer Tiefe Y' weist der zweite Abschnitt 54 größere Knickfestigkeit und Drehmoment­ stabilität als der erste Abschnitt 52 auf. Die vier Richtun­ gen A, B, C, D der Schlitze sorgen auch für die Fähigkeit einer Auslenkung des zweiten Abschnitts 54 in vier Richtun­ gen statt nur einer Auslenkbarkeit in zwei Richtungen wie im ersten Abschnitt, um bessere Fähigkeiten passiver Auslenkung zu erzielen.Referring to FIGS. 3 and 6A to 6D, the second portion 54 is provided along the passive deflection section 16 (see Fig. 1). However, the passive deflection section 16 need not have slots 46 along its length of the frame. In this embodiment, the tube 40 is provided with slots 46 a, 46 b, 46 c and 46 d into the tube 40 in four directions A, B, C and D, which are set against each other by 90 °. The slots 46 a, 46 b, 46 c, 46 d are arranged in a repeating pattern, but any suitable mixture of the patterns of the slots 46 a, 46 b, 46 c, 46 d could be present. In this embodiment, the distance X 'between adjacent slots 45 in the second section 54 is greater than the distance X between adjacent slots 46 in the first distance 52 . However, any suitable distance or spacing could apply to X ', including various distances from X' along the length of the second portion 54 . Also in this embodiment, the depth Y 'of the slots 46 a, 46 b, 46 c and 46 d in the second section 54 is smaller than the depth Y in the first section 52 . In this embodiment, the depth Y 'is approximately 1/2 of the diameter of the tube 40 and the depth Y is approximately 2/3 of the diameter of the tube 40 . However, Y and Y 'can have any suitable depth. In addition, Y 'in different ones of the slots 46 a, 46 b, 46 c, 46 d be different along the length of the second portion 54, as deeper toward the front end of the tube. The width of the slots 46 a, 46 b, 46 c and 46 d along the second section 54 could be the same as the width W in the first section 54 , but it could also be different from this width W and / or it could be along the length of the second section 54 may vary or be different, as is wider toward the front end of the tube. The second section 54 preferably has greater kink resistance, greater rigidity (or less flexibility) and greater torque stability than the first section 52 , which is more suitable for passive deflection than for active deflection. By placing the slots further apart and with a smaller depth Y ′, the second section 54 has greater kink resistance and torque stability than the first section 52 . The four directions A, B, C, D of the slots also provide the ability to deflect the second portion 54 in four directions rather than just two-way deflection as in the first portion to achieve better passive deflection capabilities.

Der dritte Abschnitt 56 des Rohrs 40 ist zwischen dem zwei­ ten Abschnitt 54 und dem nicht geschlitzten Abschnitt 59 am Hinterende vorhanden. Jedoch muss der dritte Abschnitt bei einem alternativen Ausführungsbeispiel keine Schlitze auf­ weisen. Bei diesem Ausführungsbeispiel erstreckt sich der dritte Abschnitt 56 entlang dem größten Teil der Länge des Rohrs 40. Das Muster der Schlitze 46 entlang dem dritten Ab­ schnitt 56 weist einen anderen Abstand X" auf, stimmt jedoch ansonsten mit dem Muster der Schlitze im zweiten Abschnitt 54 überein. Bei einem alternativen Ausführungsbeispiel kön­ nen die Variablen Y und W verschieden sein, die Richtungen der Schlitze 46 im dritten Abschnitt 56 können verschieden sein und der Abstand X" kann entlang der Länge des dritten Abschnitts variieren. Die Fig. 7A bis 7E zeigen eine derar­ tige Variation, bei der der dritte Abschnitt 56" des Rohrs 40 über Schlitze 56 in fünf Richtungen M, N, O, P, Q in das Rohr hinein verfügt. Der dritte Abschnitt weist vorzugsweise eine größere Knickfestigkeit, größere Steifigkeit (oder ge­ ringere Flexibilität) und größere Drehmomentstabilität als der erste und zweite Abschnitt 52, 54 auf. Bei diesem Aus­ führungsbeispiel ist dies durch den größeren Abstand X" be­ werkstelligt, jedoch könnte alternativ eine der anderen Va­ riablen oder eine Kombination derselben verwendet werden, die für Knickfestigkeit und Drehmomentstabilität sorgen. Wenn bei einem Ausführungsbeispiel der dritte Abschnitt 56 keine Schlitze aufweist, wird die Dicke der Rohrwand so aus­ gewählt, dass sie ohne Verwendung von Schlitzen für ausrei­ chende Schaftflexibilität sorgt.The third section 56 of the tube 40 is present between the two th section 54 and the non-slotted section 59 at the rear end. However, in an alternative embodiment, the third section does not have to have slots. In this embodiment, third section 56 extends along most of the length of tube 40 . The pattern of the slots 46 along the third section 56 has a different spacing X ", but otherwise matches the pattern of the slots in the second section 54. In an alternative embodiment, the variables Y and W may be different, the directions of Slits 46 in third section 56 may be different and distance X "may vary along the length of the third section. FIGS. 7A to 7E show a Derar term variation in which the third section has 56 "of the tube 40 through slots 56 in five directions M, N, O, P, Q into the pipe. The third section preferably has a larger Kink resistance, greater rigidity (or less flexibility) and greater torque stability than the first and second sections 52 , 54. In this exemplary embodiment, this is accomplished by the larger distance X ", but alternatively one of the other variables or a combination could be achieved the same are used, which ensure kink resistance and torque stability. If in one embodiment the third section 56 has no slots, the thickness of the tube wall is selected such that it provides sufficient shaft flexibility without using slots.

Der Abschnitt 59 erstreckt sich in den Griff 12 und ist fest mit dessen Rahmen verbunden.The section 59 extends into the handle 12 and is fixed to the frame.

Es wird erneut auf die Fig. 1 bis 3 Bezug genommen, gemäß denen der Mantel 32 vorzugsweise aus einem elastischen Kunststoff- oder Polymermaterial besteht. Der Mantel könnte auch eine Aufbauverstärkung enthalten, wie in der am 29. Mai 1998 mit dem Titel "Flexible Pressure Resistant Cover For The Articulation System Of A Medical Instrument" eingereich­ ten US-Patentanmeldung Nr. 09/087,305 offenbart. Der Mantel 32 ist vorzugsweise direkt am Rohr 40 befestigt, jedoch nicht durch einen Kleber. Jedoch kann bei alternativen Aus­ führungsbeispielen jede geeignete Maßnahme dazu verwendet werden, den Mantel 32 am Rohr 40 zu befestigen, einschließ­ lich eines Klebers. Der Mantel 32 kann entlang der gesamten Länge des Rohrs 40 befestigt werden, oder er kann nur an vorbestimmten, begrenzten Orten befestigt werden, wie lediglich in den Abschnitten 58, 59, wobei er ansonsten an keiner anderen Stelle befestigt ist. Daher können Stücke entlang dem Schaft 14 vorhanden sein, an denen sich der Mantel rela­ tiv zum Rohr 40 bewegen kann. Beim Stand der Technik wurde Kleber mit verschiedenen Dicken entlang der Länge des Schafts verwendet, um für verschiedene Knickfestigkeiten und Schaftflexibilitäten entlang der Länge des Schafts zu sor­ gen. Zum Hinterende des Schafts hin wurde eine dickere Kle­ beschicht verwendet, um die Knickfestigkeit des Schafts dort höher zu machen, jedoch mit dem unerwünschten Problem, dass das Hinterende des Schafts einen größeren Außendurchmesser als das Vorderende aufwies. Es ist bevorzugt, dass der Au­ ßendurchmesser klein ist, wie dann, wenn das Endoskop durch kleine Öffnungen eingeführt wird, wie den Harnleiter oder die Harnröhre eines Patienten. Bei der Erfindung ist es nicht erforderlich, die Knickfestigkeit und die Steifigkeit unter Verwendung einer erhöhten Dicke einer Kleberschicht zu erhöhen, da das Rohr 40 mit ausreichender Knickfestigkeit und Steifigkeit versehen ist. Daher kann der Schaft 14 ent­ lang seiner Länge einen gleichmäßigen Außendurchmesser auf­ weisen. So kann die Dicke oder die Außenabmessung des Schafts minimiert werden.Reference is again made to FIGS. 1 to 3, according to which the sheath 32 preferably consists of an elastic plastic or polymer material. The sheath could also include a structural reinforcement, as disclosed in U.S. Patent Application No. 09 / 087,305, filed May 29, 1998, entitled "Flexible Pressure Resistant Cover For The Articulation System Of A Medical Instrument". The jacket 32 is preferably attached directly to the tube 40 , but not by an adhesive. However, in alternative exemplary embodiments, any suitable measure can be used to fasten the jacket 32 to the tube 40 , including an adhesive. The jacket 32 can be attached along the entire length of the tube 40 , or it can be attached only at predetermined, limited locations, such as only in the sections 58 , 59 , otherwise it is not attached anywhere else. Therefore, there may be pieces along the shaft 14 on which the jacket can move relative to the tube 40 . In the prior art, glue with different thicknesses along the length of the shaft was used to provide different kink strengths and shaft flexibility along the length of the shaft. A thicker adhesive layer was used at the rear end of the shaft to increase the kink resistance of the shaft there to make, but with the undesirable problem that the rear end of the shaft had a larger outer diameter than the front end. It is preferred that the outside diameter be small, such as when the endoscope is inserted through small openings, such as a patient's ureter or urethra. It is not necessary in the invention to increase the kink resistance and rigidity using an increased thickness of an adhesive layer since the tube 40 is provided with sufficient kink resistance and rigidity. Therefore, the shaft 14 may have a uniform outer diameter along its length. In this way, the thickness or the outer dimension of the shaft can be minimized.

Beim Stand der Technik wurde der Objektivkopf an einer Aus­ lenkanordnung befestigt, die wiederum an einer Schaftanord­ nung befestigt wurde. Die Erfindung ermöglicht es, ein En­ doskop zu schaffen, das nicht über eine aktive Auslenkanord­ nung und eine gesonderte Schaftanordnung verfügt. Statt des­ sen ermöglicht es die Erfindung, dass sich das Rohr 40 über die gesamte Länge des Schafts erstreckt, wobei dieses ein­ zelne Rohr 40 Funktionen ausübt, die im Stand die Technik durch die zwei Anordnungen ausgeführt wurden. Unter Verwen­ dung des einzelnen Rohrs 40 kann der Schaft 14 in weniger Zeit und mit geringeren Kosten hergestellt und zusammenge­ baut werden als der Schaft im Stand der Technik aus zwei Anordnungen, und er kann zuverlässiger arbeiten, da weniger Teile verwendet sind, da die superelastische Legierung zu­ verlässiger ist und da geringere Gefahr eines Ausfalls oder einer Ermüdung des Schafts 14 als beim Stand der Technik be­ steht. Der Objektivkopf 34 kann innerhalb des Vorderendes des Rohrs 40 positioniert werden, wobei es sich um dasselbe Rohr handelt, das sich über den Rest des Schafts erstreckt und nicht nur über die aktive Auslenkanordnung, wie beim Stand der Technik.In the prior art, the lens head was attached to a steering arrangement, which in turn was attached to a shaft arrangement. The invention makes it possible to create an en doskop that does not have an active Auslenkanord voltage and a separate shaft arrangement. Instead of sen, the invention allows tube 40 to extend the entire length of the shaft, which performs a single tube 40 functions that were accomplished in the prior art by the two arrangements. Using the single tube 40 , the stem 14 can be manufactured and assembled in less time and at a lower cost than the prior art stem of two assemblies, and can operate more reliably because fewer parts are used because of the super elastic alloy is more reliable and since there is less risk of failure or fatigue of the shaft 14 than in the prior art. The lens head 34 can be positioned within the front end of the tube 40 , which is the same tube that extends over the rest of the shaft and not just over the active deflection arrangement as in the prior art.

Rohre aus einer superelastischen Legierung können derzeit leicht von Herstellern erworben werden. Die Rohre werden derzeit mit gleichmäßiger Wanddicke hergestellt, jedoch ist es möglich, die Wanddicke für verschiedene Steifigkeiten entlang der Rohrlänge zu variieren. Jedoch enthalten derzeit von Herstellern verkaufte Rohre aus superelastischen Legie­ rungen keine Schlitze. Um das Endoskop 10 herzustellen, müs­ sen die Schlitze 46 in das Rohr aus einer superelastischen Legierung eingearbeitet werden. Rohre können mit vorge­ schnittenen Längen erworben werden. Ein Verfahren zum Her­ stellen der Schlitze 46 kann eine Laserschneidvorrichtung verwenden. Der Laser der Vorrichtung sollte die Schlitze 46 in das geschlossene Rohr einarbeiten, während die Vorrich­ tung das Rohr und den Laser relativ zueinander bewegt. Bei einem bevorzugten Ausführungsbeispiel wird eine programmier­ bare Computersteuerung dazu verwendet, die Vorrichtung zum Herstellen der Schlitze 46 mit dem gewünschten Muster oder den gewünschten Mustern entlang der Länge des Rohrs herzu­ stellen. So kann das mindestens eine Muster durch geeignete Computerprogrammierung ausgewählt oder geändert werden, um Rohre mit verschiedenen Schlitzmustern herzustellen. Diese verschiedenen Rohrtypen können dazu verwendet werden, Endos­ kope mit verschiedenen Schafteigenschaften herzustellen, wie mit verschiedenen Steifigkeiten entlang ihrer Länge und ver­ schiedenen Fähigkeiten zur aktiven Auslenkung innerhalb ihrer Abschnitte für aktive Auslenkung (für eine Richtung, zwei Richtungen, vier Richtungen, usw.). Bei einem alterna­ tiven Verfahren kann elektrische Entladungsbearbeitung (EDM = electrical discharge machining) mittels eines Drahts zum Herstellen der Schlitze verwendet werden. Jedoch kann zum Herstellen der Schlitze jedes geeignete Verfahren genutzt werden.Tubes made of a super elastic alloy can currently be easily purchased from manufacturers. The pipes are currently manufactured with a uniform wall thickness, but it is possible to vary the wall thickness for different stiffnesses along the pipe length. However, pipes made of super-elastic alloys sold by manufacturers currently do not contain any slots. In order to manufacture the endoscope 10 , the slits 46 must be machined into the tube made of a super elastic alloy. Pipes can be purchased with pre-cut lengths. A method of making the slots 46 may use a laser cutter. The laser of the device should work the slots 46 into the closed tube while the device moves the tube and the laser relative to each other. In a preferred embodiment, a programmable computer controller is used to make the device for making the slots 46 with the desired pattern or patterns along the length of the tube. The at least one pattern can be selected or changed by suitable computer programming in order to produce pipes with different slot patterns. These different types of tubes can be used to make endoscopes with different shaft properties, such as different stiffnesses along their length and different active deflection capabilities within their active deflection sections (for one direction, two directions, four directions, etc.). In an alternative method, electrical discharge machining (EDM) using a wire can be used to make the slots. However, any suitable method can be used to make the slots.

Einer der Vorteile der Erfindung besteht in der Möglichkeit, Endoskope mit verschiedenen Schafteigenschaften dadurch her­ zustellen, dass Rohre mit verschiedenen Schlitzmustern ver­ sehen werden, wie mit einfach mehr oder weniger Schlitzen 46 im Rohr 40. Durch diesen Vorteil kann ein Benutzer ein En­ doskop mit gewünschtem Verlauf der Schaftsteifigkeit aus ei­ ner Anzahl von Endoskopen auswählen, die ansonsten praktisch gleich sind. Der Hersteller kann auch ein Endoskop kunden­ spezifisch mit einem gewünschten Verlauf der Schaftsteifig­ keit dadurch für einen Benutzer herstellen, dass er ledig­ lich die Schlitzherstellvorrichtung für ein geeignetes Schlitzmuster umprogrammiert. Die Erfindung ermöglicht es auch, einen Schaft abzubauen und das Rohr 40 mit mehr Schlitzen zu versehen, um dessen Schafteigenschaften zu än­ dern.One of the advantages of the invention is the ability to manufacture endoscopes with different shaft properties by seeing tubes with different slot patterns, such as simply having more or fewer slots 46 in tube 40 . This advantage enables a user to select an endoscope with the desired course of the shaft stiffness from a number of endoscopes which are otherwise practically the same. The manufacturer can also produce an endoscope specifically for a user with a desired course of the shaft stiffness by simply reprogramming the slot manufacturing device for a suitable slot pattern. The invention also makes it possible to dismantle a shaft and to provide the tube 40 with more slots in order to change its shaft properties.

Endoskope müssen nach ihrem Gebrauch gereinigt werden. Zu einem Reinigungsverfahren gehört das Sterilisieren mit einem Gas und das Absenken des Drucks. Ein Problem bei Gassterili­ sation besteht darin, dass der Druck innerhalb des Schafts nach außen drückt, wenn der Druck außerhalb des Schafts ab­ gesenkt wird. Bei Endoskopen mit Belüftungsventilen ist dies im Allgemeinen kein Problem. Jedoch erhöhen Belüftungsventi­ le die Kosten des Endoskops, und wenn ein Benutzer das Be­ lüftungsventil für den Reinigungsvorgang zu öffnen vergisst, kann der Schaftmantel reißen. Es existieren Endoskope ohne Belüftungsventile. Statt dessen verfügen sie über verstärkte Mäntel. Ein verstärkter Mantel, wie in der oben angegebenen Patentanmeldung erwähnt, kann dieses Problem eines Zerrei­ ßens überwinden. Eine andere Art zum Überwinden dieses Prob­ lems besteht darin, innerhalb des Rohrs 40 ein dünnwandiges Verstärkungsrohr anzubringen. Gemäß Fig. 8 besteht eine an­ dere Art zum Überwinden dieses Problems darin, den Schaft 14' innerhalb des Bereichs 42 des Rohrs 40 mit einem Rohr 41 mit mehreren Gängen zu versehen. Das Rohr 41 mit mehreren Gängen kann aus einem flexiblen Polymermaterial bestehen und Kanäle 70, 72, 74, 76 für die Auslenkungs-Steuerungskabel und die Faseroptik sowie einen Kanal 78, der einen Arbeits­ kanal bildet, beinhalten. Das Rohr kann auch ein solches mit einem einzelnen Hohlraum sein, wie das oben genannte dünn­ wandige Rohr.Endoscopes need to be cleaned after use. A cleaning process includes gas sterilization and pressure reduction. One problem with gas sterilization is that the pressure inside the stem pushes out as the pressure outside the stem decreases. This is generally not a problem with endoscopes with ventilation valves. However, vent valves increase the cost of the endoscope, and if a user forgets to open the vent valve for the cleaning process, the shaft jacket can tear. There are endoscopes without ventilation valves. Instead, they have reinforced coats. A reinforced sheath, as mentioned in the above-mentioned patent application, can overcome this problem of tearing. Another way to overcome this problem is to install a thin-walled reinforcement tube within tube 40 . Referring to FIG. 8 there is a particular way of overcoming this problem is to provide the shaft 14 'within the area 42 of the tube 40 with a tube 41 having a plurality of gears. The multi-pass tube 41 may be made of a flexible polymeric material and include channels 70 , 72 , 74 , 76 for the deflection control cables and fiber optics, as well as a channel 78 forming a working channel. The tube may also be a single cavity tube such as the thin wall tube mentioned above.

Claims (32)

1. Endoskop mit einem Steuerungsabschnitt (12) und einem sich ausgehend von diesem erstreckenden Schaft. (14), dadurch gekennzeichnet, dass der Schaft einen Rahmen (26) mit einem einstückigen Rohr (40) entlang dem Hauptteil der Länge des Schafts aufweist, wobei das Rohr aus einer superelastischen Legierung besteht und es Schlitze (46) in es hinein zumin­ dest über einen Abschnitt (52, 54, 56, 59) aufweist, und wobei es die superelastischen Eigenschaften der superelasti­ schen Legierung ermöglichen, dass sich das Rohr in der Nähe der Schlitze ohne wesentliche dauerhafte Verformung ver­ biegt, und sie dafür sorgen, dass der Schaft mit angemessen­ er Knickfestigkeit, Flexibilität und Drehmomentfestigkeit versehen ist, um in einen Patientenkörper eingeführt werden zu können.1. Endoscope with a control section ( 12 ) and a shaft extending from this. ( 14 ), characterized in that the shaft has a frame ( 26 ) with a one-piece tube ( 40 ) along the main part of the length of the shaft, the tube being made of a super-elastic alloy and having slots ( 46 ) into it at least over a section ( 52 , 54 , 56 , 59 ), and wherein the super-elastic properties of the super-elastic alloy allow the tube to bend near the slots without significant permanent deformation, and they ensure that the shaft with adequate kink resistance, flexibility and torque resistance to be inserted into a patient's body. 2. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass ein erster der Abschnitte einen ersten Abstand (X) zwischen den Schlitzen und ein zweiter der Abschnitte einen zweiten, anderen Abstand (X') zwischen den Schlitzen aufweist.2. Endoscope according to claim 1, characterized in that a first of the sections a first distance (X) between the slots and a second of the sections a second, has a different distance (X ') between the slots. 3. Endoskop nach Anspruch 2, dadurch gekennzeichnet, dass ein dritter der Abschnitte einen dritten Abstand (X") zwi­ schen den Schlitzen aufweist, der verschieden vom ersten und zweiten Abstand (X, X') ist.3. Endoscope according to claim 2, characterized in that a third of the sections a third distance (X ") between slits different from the first and second distance (X, X '). 4. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass sich die Schlitze (46) entlang einem ersten der Abschnitte (52, 54, 56) mit einem ersten Muster mehrerer verschiedener Richtungen in das Rohr (40) hinein erstrecken.4. Endoscope according to claim 1, characterized in that the slots ( 46 ) extend along a first of the sections ( 52 , 54 , 56 ) with a first pattern of several different directions into the tube ( 40 ). 5. Endoskop nach Anspruch 4, dadurch gekennzeichnet, dass das erste Muster der Schlitze (46) solche Schlitze aufweist, die in verschiedenen Richtungen entlang dem Ersten Abschnitt in gemischtem Muster angeordnet sind. 5. Endoscope according to claim 4, characterized in that the first pattern of the slits ( 46 ) has such slits which are arranged in different directions along the first section in a mixed pattern. 6. Endoskop nach Anspruch 4, dadurch gekennzeichnet, dass sich die Schlitze (46) im ersten Abschnitt über mehr als die Hälfte durch das Rohr erstrecken.6. Endoscope according to claim 4, characterized in that the slots ( 46 ) in the first section extend over more than half through the tube. 7. Endoskop nach Anspruch 4, dadurch gekennzeichnet, dass sich die Schlitze (46) entlang einem zweiten der Abschnitte (52, 54, 56) mit einem zweiten, anderen Muster von Richtun­ gen in das Rohr hinein erstrecken.7. Endoscope according to claim 4, characterized in that the slots ( 46 ) extend along a second of the sections ( 52 , 54 , 56 ) with a second, different pattern of directions into the tube. 8. Endoskop nach Anspruch 4, dadurch gekennzeichnet, dass der erste Abschnitt einen ersten Abstand (X) zwischen den Schlitzen (46) und ein zweiter der Abschnitte einen zweiten, anderen Abstand (X', X") zwischen den Schlitzen aufweist.8. Endoscope according to claim 4, characterized in that the first section has a first distance (X) between the slots ( 46 ) and a second of the sections has a second, different distance (X ', X ") between the slots. 9. Endoskop nach Anspruch 8, dadurch gekennzeichnet, dass sich die Schlitze (46) entlang dem zweiten Abschnitt mit einem zweiten, anderen Muster von Richtungen in das Rohr (40) hinein erstrecken.9. Endoscope according to claim 8, characterized in that the slits ( 46 ) extend along the second section with a second, different pattern of directions into the tube ( 40 ). 10. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass sich das Rohr (40) über die gesamte Länge des Schafts (14) erstreckt.10. Endoscope according to claim 1, characterized in that the tube ( 40 ) extends over the entire length of the shaft ( 14 ). 11. Endoskop nach Anspruch 1, gekennzeichnet, durch einen Objektivkopf (34), der innerhalb des Rohrs (40) an dessen distalem Ende liegt.11. Endoscope according to claim 1, characterized by a lens head ( 34 ) which lies within the tube ( 40 ) at its distal end. 12. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass der Schaft (14) ferner einen mit dem Rohr (40) verbundenen Mantel (32) aufweist und er im Wesentlichen über seine ge­ samte Länge einen im Wesentlichen gleichmäßigen Außendurch­ messer aufweist. 12. Endoscope according to claim 1, characterized in that the shaft ( 14 ) further comprises a jacket ( 32 ) connected to the tube ( 40 ) and it has a substantially uniform outer diameter over substantially its entire length. 13. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass der Rahmen (26) ferner ein Rohr mit einem einelnen oder mit mehreren Hohlräumen innerhalb des einstückigen Rohrs (40) aufweist.13. Endoscope according to claim 1, characterized in that the frame ( 26 ) further comprises a tube with a single or with several cavities within the one-piece tube ( 40 ). 14. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass sich mindestens zwei der Schlitze (46) mit zwei verschiede­ nen Tiefen in das Rohr (40) hinein erstrecken.14. Endoscope according to claim 1, characterized in that at least two of the slots ( 46 ) with two different NEN depths extend into the tube ( 40 ). 15. Endoskop mit einem Schaft (14), einem diesen durchdrin­ genden faseroptischen System (36, 37) und einem ihn eben­ falls durchdringenden Auslenksteuerungssystem (22), dadurch gekennzeichnet, dass der Schaft einen Rahmen (26) mit einem Rohr (40) aus superelastischem Material aufweist, wobei sich Schlitze (46) in mindestens zwei verschiedenen Richtungen in das Rohr hinein erstrecken.15. Endoscope with a shaft ( 14 ), a fiber optic system ( 36 , 37 ) penetrating this and a deflection control system ( 22 ) which also penetrates it, characterized in that the shaft comprises a frame ( 26 ) with a tube ( 40 ) has superelastic material, slots ( 46 ) extending into the tube in at least two different directions. 16. Endoskop nach Anspruch 15, dadurch gekennzeichnet, dass das Rohr (40) in einem ersten Abschnitt einen ersten Abstand (X) zwischen den Schlitzen (46) und in einem zweiten Ab­ schnitt einen zweiten, anderen Abstand (X', X") zwischen den Schlitzen aufweist.16. Endoscope according to claim 15, characterized in that the tube ( 40 ) in a first section a first distance (X) between the slots ( 46 ) and in a second section from a second, different distance (X ', X ") between the slots. 17. Endoskop nach Anspruch 15, dadurch gekennzeichnet, dass die Schlitze (46) mit anderer Richtung entlang einem ersten Abschnitt des Rohrs (40) mit einem gemischten Muster ange­ ordnet sind.17. Endoscope according to claim 15, characterized in that the slots ( 46 ) are arranged in a different direction along a first section of the tube ( 40 ) with a mixed pattern. 18. Endoskop nach Anspruch 17, dadurch gekennzeichnet, dass sich die Schlitze (46) entlang einem zweiten Abschnitt des Rohrs (40) mit einem zweiten, anderen Muster von Richtungen als die Schlitze im ersten Abschnitt in das Rohr hinein er­ strecken. 18. Endoscope according to claim 17, characterized in that the slots ( 46 ) along a second section of the tube ( 40 ) with a second, different pattern of directions than the slots in the first section into the tube he stretch. 19. Endoskop nach Anspruch 15, dadurch gekennzeichnet, dass sich mindestens zwei der Schlitze (46) mit zwei verschiede­ nen Tiefen in das Rohr (40) hinein erstrecken.19. Endoscope according to claim 15, characterized in that at least two of the slots ( 46 ) with two different NEN depths extend into the tube ( 40 ). 20. Endoskop mit einem Steuerungsabschnitt (12) und einem sich ausgehend von diesem erstreckenden Schaft (14) mit ei­ nem im Wesentlichen rohrförmigen Rahmenelement (26, 40), dadurch gekennzeichnet, dass der Schaft im Wesentlichen über seine gesamte Länge im Wesentlichen gleichmäßige Außenabmes­ sungen aufweist und das rohrförmige Rahmenelement den Schaft entlang seiner Länge mit mindestens zwei Abschnitten (52, 56, 56) mit zwei verschiedenen Steifigkeiten versieht.20. Endoscope with a control section ( 12 ) and a shaft ( 14 ) extending therefrom with an essentially tubular frame element ( 26 , 40 ), characterized in that the shaft measures substantially uniform outer dimensions over its entire length and the tubular frame element provides the shaft along its length with at least two sections ( 52 , 56 , 56 ) with two different stiffnesses. 21. Endoskop nach Anspruch 20, dadurch gekennzeichnet, dass das Rahmenelement (26, 40) über einen ersten Abschnitt mit einem ersten Muster von Schlitzen (46) und einen zweiten Ab­ schnitt mit einem zweiten Muster von Schlitzen verfügt.21. Endoscope according to claim 20, characterized in that the frame element ( 26 , 40 ) has a first section with a first pattern of slots ( 46 ) and a second section with a second pattern of slots. 22. Endoskop nach Anspruch 21, dadurch gekennzeichnet, dass das erste Muster einen ersten Abstand (X) zwischen den Schlitzen aufweist und das zweite Muster einen zweiten, an­ deren Abstand (X', X") zwischen den Schlitzen aufweist.22. Endoscope according to claim 21, characterized in that the first pattern a first distance (X) between the Has slits and the second pattern a second the distance (X ', X ") between the slots. 23. Endoskop nach Anspruch 21, dadurch gekennzeichnet, dass das erste Muster Schlitze (46) aufweist, die sich mit einem ersten sich wiederholenden Muster verschiedener Richtungen in das Rahmenelement (26, 40) hinein erstrecken, und das zweite Muster Schlitze aufweist, die sich mit einem zweiten sich wiederholenden Muster verschiedener Richtungen in das Rahmenelement hinein erstrecken, wobei die letztgenannten Richtungen zumindest teilweise verschieden gegenüber dem ersten sich wiederholenden Muster von Richtungen sind. 23. Endoscope according to claim 21, characterized in that the first pattern has slots ( 46 ) which extend into the frame element ( 26 , 40 ) with a first repeating pattern of different directions, and the second pattern has slots which extend extend into the frame member with a second repeating pattern of different directions, the latter directions being at least partially different from the first repeating pattern of directions. 24. Endoskop nach Anspruch 21, dadurch gekennzeichnet, dass das erste Muster Schlitze (46) mit einer ersten Tiefe auf­ weist und das zweite Muster Schlitze mit einer zweiten, an­ deren Tiefe aufweist.24. Endoscope according to claim 21, characterized in that the first pattern has slots ( 46 ) with a first depth and the second pattern has slots with a second depth. 25. Verfahren zum Herstellen eines Endoskopschaftrahmens mit dem folgenden Schritten:
  • - Bereitstellen eines Rohrs (40) aus einer superelastischen Legierung und
  • - Herstellen von Schlitzen (46) im Rohr, um mindestens einen Abschnitt des Rohrs mit erhöhter Flexibilität zu versorgen.
25. A method of making an endoscope shaft frame, comprising the following steps:
  • - Providing a tube ( 40 ) made of a super elastic alloy and
  • - Making slots ( 46 ) in the tube to provide at least a portion of the tube with increased flexibility.
26. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass die Schlitze (46) durch einen Laser in das Rohr (40) eingeschnitten werden.26. The method according to claim 25, characterized in that the slots ( 46 ) are cut into the tube ( 40 ) by a laser. 27. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass die Schlitze (46) durch eine elektrische Entladungsma­ schine (EDM) in das Rohr (40) eingeschnitten werden.27. The method according to claim 25, characterized in that the slots ( 46 ) are cut into the tube ( 40 ) by an electrical discharge machine (EDM). 28. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass das Rohr (40) zwischen dem Herstellen mindestens zweier der Schlitze (46) verdreht wird.28. The method according to claim 25, characterized in that the tube ( 40 ) is rotated between the production of at least two of the slots ( 46 ). 29. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass die Schlitze in einem ersten der Abschnitte (52, 54, 56) mit einem ersten Abstand (X) zwischen den Schlitzen und in einem zweiten der Abschnitte mit einem zweiten, anderen Abstand (X', X") hergestellt werden.29. The method according to claim 25, characterized in that the slots in a first of the sections ( 52 , 54 , 56 ) with a first distance (X) between the slots and in a second of the sections with a second, different distance (X ' , X ") can be produced. 30. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass ein erster der Schlitze (46) mit einer Tiefe in das Rohr (40) hinein hergestellt wird und ein anderer der Schlitze mit einer zweiten, anderen Tiefe in das Rohr hinein hergestellt wird. 30. The method according to claim 25, characterized in that a first of the slots ( 46 ) with a depth into the tube ( 40 ) is made and another of the slots with a second, different depth is made into the tube. 31. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass Schlitze in mindestens zwei der Abschnitte (52, 54, 56, 59) hergestellt werden, wobei in jedem Abschnitt ein anderes Muster der Schlitze hergestellt wird.31. The method according to claim 25, characterized in that slots are produced in at least two of the sections ( 52 , 54 , 56 , 59 ), a different pattern of the slots being produced in each section. 32. Verfahren zum Herstellen von Endoskopen, gekennzeichnet durch die folgenden Schritte:
  • - Bereitstellen einer ersten Art eines Schaftrahmens mit ei­ nem ersten Rohr mit einem ersten Muster von Schlitzen in dieses erste Rohr hinein;
  • - Bereitstellen einer zweiten Art eines Schaftrahmens mit einem zweiten Rohr mit einem zweiten Muster von Schlitzen in dieses zweite Rohr hinein, wobei das zweite Muster vom ersten Muster verschieden ist; und
  • - Zusammenbauen eines ersten der Endoskope mit dem ersten Schaftrahmentyp und eines zweiten der Endoskope mit dem zweiten Schaftrahmentyp;
  • - wobei das erste und zweite Endoskop verschiedene Knickfes­ tigkeitsmuster entlang ihrer Länge aufweisen, die durch die verschiedenen Schlitzmuster im ersten und zweiten Rohr ge­ schaffen sind.
32. Method for producing endoscopes, characterized by the following steps:
  • - Providing a first type of shaft frame with a first tube with a first pattern of slots in this first tube;
  • Providing a second type of stem frame with a second tube with a second pattern of slots into this second tube, the second pattern being different from the first pattern; and
  • Assembling a first one of the endoscopes with the first frame type and a second one of the endoscopes with the second frame type;
  • - The first and second endoscopes have different kink resistance patterns along their length, which are created by the different slit patterns in the first and second tubes.
DE10052679A 1999-10-26 2000-10-24 Endoscope has control section and shaft with frame, and pipe containing slits Withdrawn DE10052679A1 (en)

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